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Rb25/30 Rb30det Vvt Internal Oil Control

psi

By psi,
in Engines & Forced Induction

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cdorhout Newbie

cdorhout

Posted
Posted

Wow, that's great. I thought about the same theory when I did my RB30, but I didn't dare pull that plug out for fear I'd never be able to find something to go back in there. Very good idea!!

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fletch rb30
fletch rb30

33 and 34 vct activation is different. On 33 heads, the oil constantly feeds the front journal to lubricate it. The oil leaves the journal via the vct solenoid into the head. When the vct engages the

daisu
daisu

Just to get an idea of how it works, is this what is happening with the oil feed?

psi
psi

I've heard of a few plugs that refuse to play the game. I thought I would have that issue and got some brass just incase.. If you do break or mangle it, you will have to make a copy. Nice pics

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cdorhout Newbie

cdorhout

Posted
Posted
anybody else doing this mod?

im going to give it ago just wondering if there are any others out there who went with this method.

I did it after reading this post. Worked great! Plus, I got rid of my oil leak from the external oil fitting in the head. I had the hole in the head welded shut.

  • 2 weeks later...
  • 2 months later...
psi Experienced

psi

Posted
  • Author
Posted

The blue circle is the oil return port for the VVT.

The oil comes into there from the VVT valve and this port allows the oil to return to the head and drain away.

does that clear that up for you?

I pulled it out just to see what was in there! There is nothing that I can see in there that would/could be of any other use!

(but I did have to check! hahaahaa) Anyway, DONT pull it out unless you need to.. and I cant see why you would need to..

  • 2 weeks later...
psi Experienced

psi

Posted
  • Author
Posted

Feel free to take more pics and post them up..

I tried to give as much info as I could, so, you should be able to do the job without too much bother.

be kind to the plug when removing it.. you dont want to break it in half! or drill too deep!

happy modding mate!

TriniGT Experienced

TriniGT

Posted
Posted
Read the WHOLE thread again! check out post #4.

I put some colour on the bit that you need to look at!

Damn what was I looking at??? But in the pic you can see that mine has some sort of ballbearing on the outside, is the plug behind that? Would I need to drill into the ball and then somehow get something screwed in and pulled out and then tackle the plug?

psi Experienced

psi

Posted
  • Author
Posted

I han't done a Neo head.. but I'm guessing that Nissan didn't stray too far from what they already know works.

Please take another pic, up close and front on, just like mine so everybody can see what your looking at.

bigturbo Newbie

bigturbo

Posted
Posted

hey just one more thing on this does it actually work because on the factory 25 block the vvt is getting a direct high pressure feed straight from the oil pump wheres this method is only getting in from the head?also when you other guys are putting the pistons in the block do you put oil on the rings or assemble dry 2 prevent the bores glazing up cheers chris nz :)

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